Ticut



(No Model.)

W. W. ARMINGTON 8: H A.

BRIGGS.

FIRE ARM.

Patented June 3, 1890.

FIAWW/II i l UNITED STATES PATENT OFFICE.

\VILLIAM \V. ARMING'UN AND HORACE A. BRIGGS, ()F NURlVlUll, CONNEC-TICU"; SAID ARMINGTON ASSIGNOR TO SAID BRIGGS ANI) IIARLES \Y. HOPKINS,SAMUEL S. HOPKINS, AND CHARLES ll. ALLEI ALL OF SAME PLACE.

FIRE-ARM.

SPECIFICATION forming part of Letters Patent No. 429,110, dated June 3,1890. Application filedfehrnary 17, 189i). Serial No. 340,696- lNomodel.

To all whom it may concern:

Be it known that we, WILLIAM ".AR1\IING- TON and HORACE A. BRIGGS,citizens of the United States, residing in the city of Norwich, countyof New London, and State of Connecticut, have jointly invented certainnew and useful Improvements in Fire-Arms, which improvements are fullyset forth and described in the following specification, reference beinghad to the accompanying sheet of drawing...

The object of our invention is to provide a cheap. serviceable, andpositive device for locking together the barrel and frame in that classof arms in which the barrel is turned down to fit a corresponding holein the frame. In such arms, while it is necessary that the frame andbarrel be seen rely fastened together when the arm is in service, it isalso desirable that the barrel-fastening be of such a nature that saidbarrel may be quickly removed without the aid of special tools.

In the annexed drawings, Figure 1 is a side view of portions of a rifleframe and barrel, said parts being locked together by a screwkeyfastening of our improved construction. Fig. 2 is a cross-section ofFig. 1 on line as Fig. 3 is a detached view (somewhat enlarged) of ourimproved screw-key, and Fig. 4- a 1011 gitudinal sectional view of thesame. Fig. 5 is an outer face view of the nut c and itsoperating-handle, and Fig. 6 is a similar view of a nut formedsubstantially as an ordinary thumb-nut.

The letter a denotes the frame of an arm, I) the barrel, and c thescrew-key fastening as a whole.

The lock proper of our device consists of a pin or key 0', which ispreferably slightly tapered, and which passes through the frame at apoint where it intersects and cuts into the periphery of the barrel, asin Patent No. 14,491, issued March 25, 1856. In said patent the pinserves as a locking key or wedge that may be driven into or out of placeto lock or release the barrel; butour presentdevice differs from that ofsaid patent in having connected with the locking pin or key meanswhereby said key may be forced into place or casilywithdrawn without theaid of a ban.- mer or other tool. Further, our loekingkey cannot byaccident work loose and jar out of place. The outer (larger) end of ourpin r: is shouldered down to enter a corresponding holein a ring-shapedsection P, that is threaded on its periphery and adapted to screw into athreaded recess in frame a. The shouldered end of pin 0' is fittedloosely in section 0 and does not necessarily rotate with said section,but is prevented from leaving said section by a screw c', that is tappedinto the end of the pin, as indicated in dotted lines in Fig. 4.Projecting radially from the threaded section 1: is an operating-handle,which Iprefor to form as a simple lover c, as illustrated in Figs. 1 to5, although, if desired, two projcctions, substantially as in ordinarythumbnuts, could be provided, such double form of operating-handle beingshown in Fig. (i of the drawin 7o \Vhen it is desired to lock togetherthe barrel and frame, our described screw-key is entered in the frameand the threaded section 0 screwed home, which action forces the pin 0forward into its seat in both frame and barrel and prevents theirseparation until nut is again unscrewed.

To prevent the entire withdrawal of pin (1', (in which case it mightbelost or misplaced,) we have tapped into frame a from its under side ascrew (Z, whose end projects upward into a longitudinal groove 0 in saidpin c, the said groove being out nearly but not quite to the end of thepin. \Vhen the pin is withdrawn, the end of screw (Z engages the endwall of groove c,and thus prevents the entire withdrawal. of thelocking-pin.

Having thus described our claim-- 1. In combination with the frame andbarrel of an arm of the class referred to, a locking-pin passing throughthe frame and across the barrel, and having revolubly secured to one enda threaded ring-section that may be screwed into acorrespondingly-thrcaded recess in the frame, as set forth, saidring-sec invention, we

tion being provided with an operating-handle, all being substantially asand for the purpose specified.

2. In combination with the frame and barrel of an arm, alongitudinally-grooved pin (passing across the barrel) and havingrevolubly secured to one end a threaded ring-section that may be screwedinto a correspondingly-threaded recess in the frame, and a screw tappedinto said frame, with its end pro- 10 jecting into said longitudinalgroove, all bein g as and for the purpose specified.

\VILLIAM \V. ARHING'IUN. HORACE A. BRIGGS.

\Viinesses:

FRANK lI. ALLEN, ALONZO M. LUTHER.

